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A hidden bookcase door needs strong hinge hardware, but a hinge kit is not a finished door. The three listings below are hinge kits only; you still have to build or buy the bookcase and mount it correctly.
Quick answer
The MURPHY DOOR kit is the only one sold under the Murphy Door name, but its listing shows both 300 lbs and 540 pounds, so check the live page before you rely on either. The KIMSOFUNNY (black) and Millsten kits both list a 570 pound load and 360 degree rotation. The Millsten names solid 304 stainless steel and is the larger of the two 570 pound kits at 5.12 x 1.5 inches.
Comparison table
| Product | Brand status | Listed size | Listed load | Other details |
|---|---|---|---|---|
| MURPHY DOOR hinge | Sold under the Murphy Door name | 6 x 2 inches; 1.5 pounds | Title: up to 300 lbs; listing details: 540 pounds | Easy DIY hidden door system |
| KIMSOFUNNY pivot hinge | Generic kit | 2 x 1 inches | 570 pounds | Black; 360 degree rotation |
| Millsten pivot hinge | Generic kit; title mentions Murphy Door as a use | 5.12 x 1.5 inches | 570 pounds | 360 degree rotation; solid 304 stainless steel |
The three hinge kits
MURPHY DOOR Hidden Hinge Hardware
What it is: A hidden door hinge system from the Murphy Door brand, listed at 6 x 2 inches and 1.5 pounds. The title says up to 300 lbs while the listing also shows 540 pounds.
Who it suits: Buyers who want the Murphy Door name and are willing to confirm the rated load with the seller.
Pros
- Only listing sold under the Murphy Door name
- Described as an easy DIY system
Cons
- The load figures conflict: 300 lbs in the title, 540 pounds in the listing details
- Hinge only, not a bookcase
Skip it if: you cannot confirm the rated load for the bookcase you plan to hang.
See the MURPHY DOOR hinge on Amazon (affiliate link)
KIMSOFUNNY Hidden Door Pivot Hinge, 570 lb (Black)
What it is: A black pivot hinge kit with a 570 pound load rating and 360 degree rotation, listed at 2 x 1 inches. It is a generic kit rather than the Murphy Door brand.
Who it suits: Builders who want a small hinge and have already worked out the weight of their finished bookcase door.
Pros
- 570 pound rating listed
- 360 degree rotation
- Smallest of the three
Cons
- Hinge only
- Package contents are not stated here
Skip it if: you want a branded Murphy Door product.
See the KIMSOFUNNY hinge on Amazon (affiliate link)
Millsten Hidden Door Pivot Hinge, 570 lb, Stainless Steel
What it is: A hinge kit with solid 304 stainless steel named in the title, a 570 pound load capacity and 360 degree rotation, listed at 5.12 x 1.5 inches. The title mentions Murphy Door only as an intended use.
Who it suits: Builders who want a larger stainless steel hinge for a loaded bookcase door.
Pros
- 570 pound capacity listed
- Stainless steel named
- 360 degree rotation
Cons
- Larger than the KIMSOFUNNY, so allow room to mount it
- Steel gauge is not stated
- Hinge only
Skip it if: you want a branded Murphy Door kit or a very small hinge.
See the Millsten hinge on Amazon (affiliate link)
Buying checklist
- Treat each listing as hardware only; budget for the bookcase and carpentry separately.
- Check the rated load against the finished door and everything on its shelves.
- Where a listing shows two load figures, confirm the correct one with the seller.
- Mark the swing arc and check for switches, trim and light fixtures near the opening.
- Follow the installation instructions and mount to solid framing; get qualified help if you are unsure.
- Test the door slowly through its full path before loading it, and keep children and pets clear.
Related guides
If you also need a freestanding shelf, see 3 Tier Bookcase: Load Per Shelf and Window Fit.
FAQ
Is a hinge kit a complete hidden bookcase door?
No. These listings are hinge hardware only. You still need a bookcase or door panel, a frame opening and a safe way to mount everything.
Which of these is the real Murphy Door product?
Only the first listing is sold under the MURPHY DOOR name. The other two are generic kits, and the Millsten title mentions Murphy Door only as an intended use.
How much weight can the hinges hold?
The KIMSOFUNNY and Millsten list 570 pounds. The MURPHY DOOR listing shows both 300 lbs and 540 pounds, so confirm it before use. A rating does not say how the hinge was mounted or loaded.
Do I need to anchor the bookcase to the wall?
Follow the product instructions. Heavy hidden doors and tall bookcases often need structural attachment, and the right fastener depends on the wall and the load.
Is the biggest hinge the best?
Not necessarily. The Millsten is 5.12 x 1.5 inches and the KIMSOFUNNY is 2 x 1 inches. Choose by rated load, mounting needs and your carpentry, not by size alone.
Closing note
For most builds the choice comes down to a branded kit with conflicting load figures versus two generic 570 pound kits. Whichever you choose, confirm the rating on the live page, mark out the swing and fix the hinge to solid framing.
